Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
2009/7/7 Heiko <rupertt at gmail.com> > Hi, > > i have a 2 node cluster that ran over a switch, I now have a dedicated line > for heartbeat and drbd. > This dedicated line has its own interface on the servers. > Is it possible to switch onthefly from one interface to the other? > I assume I have to change the IP in the resource section to the new one and > than do an adjust resource? > Wont this produce a splitbrain when In adjust the resources one after > another? > If you are running DRBD in Active/Passive setup and nothing wrong happens (nothing will activate your standby resources), there is no reason for split-brain. drbdadm disconnect all <modify config accordingly> drbdadm adjust all With heartbeat V1 it is a bit more complicated. I think it only picks up config changes during service start. So I would suggest to stop heartbeat on standby node before you proceed. > > Both hosts have entries in our nameserver which point to the IP on eth0 and > not onto the dedicated IP. > Is a simple entry in the /etc/hosts enough to point drbd/heartbeat into the > right direction? > > When i adjust heartbeat to the new settings, can I just change the ucast > entries to the new IP-Addresses? > Since the howto says it would better to use 2 channels should I add the 2 > new IP addresses and keep the old ones? > This would mean 4 ucast entries and 2 node entries, right? > This will probably require restart of heartbeat - it means restart of resources. Can you live with that? If not, you can try killall -9 heartbeat Tino -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20090707/1c797322/attachment.htm>